Shimano 105 ST R7000 11 Speed Shift Brake Lever Option:Left The AirCushion backpanel is made 103826 GVLSREG The AirCushion backpanel is made from proprietary mesh with a 3D structure consisting of over 90% open air Twisted side seams and dropped shoulder seams for comfort when wearing a pack The Shimano 105 R7000 mechanical brake Dual Control Levers bring quick and intuitive shifting and confidant braking in an affordable package Features Redesigned internal shifting unit Greater reach adjust range Easier access to inner shift cable Quick and intuitive rear shifting operation Reliable performance in race conditions Lighter front shifting when paired with FD R7000